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Add a syntax for enumerations in value lists.

This commit is contained in:
Albert Graef 2018-08-30 14:46:35 +02:00
parent 395fd5ebe8
commit 8d42c1658d
1 changed files with 24 additions and 2 deletions
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26
readconfig.c
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@ -901,7 +901,7 @@ re_press_temp_modifiers(void)
note ::= ( "a" | ... | "g" ) [ "#" | "b" ]
other ::= "ch" | "pb" | "pc" | "cc" | "cp" | "kp:" note
steps ::= "[" number "]" | "{" list "}" | "[" number "]" "{" list "}"
list ::= number { "," number | ":" number }
list ::= number { "," number | ":" number | "-" number }
flag ::= "-" | "+" | "=" | "<" | ">" | "~" | "'"
Case is insignificant. Numbers are always in decimal. The meaning of
@ -969,7 +969,7 @@ static char *parse_steps(char *tok, char *p,
int n_st = 1;
static int st[MAXSTEPS];
st[0] = l;
while (*p == ',' || *p == ':') {
while (*p == ',' || *p == ':' || *p == '-') {
char c = *p++;
if (sscanf(p, "%d%n", &l, &n) == 1) {
p += n;
@ -990,6 +990,28 @@ static char *parse_steps(char *tok, char *p,
}
}
}
} else if (c == '-') {
// '-l' denotes an enumeration starting at the last value
if (n_st <= 0) return 0;
int last = st[n_st-1];
if (l >= last) {
for (int i = last+1; i <= l; i++) {
st[n_st++] = i;
if (n_st == MAXSTEPS) {
fprintf(stderr, "warning: too many steps: %s\n", tok);
break;
}
}
} else {
for (int i = last-1; i >= l; i--) {
st[n_st++] = i;
if (n_st == MAXSTEPS) {
fprintf(stderr, "warning: too many steps: %s\n", tok);
break;
}
}
}
if (st[n_st-1] != l) break;
} else if (n_st < MAXSTEPS) {
st[n_st++] = l;
if (n_st == MAXSTEPS)